Results 81 to 90 of about 10,109 (229)

An insect †Archaeopteryx: Cretaceous amber fossil elucidates the evolution of complex host detection and ovipositor mechanisms in parasitoid woodwasps (Hymenoptera: Orussoidea)

open access: yesSystematic Entomology, Volume 50, Issue 3, Page 630-645, July 2025.
We describe †Cretovelona orussopteryx n. gen. & sp. from Kachin amber. The fossil is examined with synchrotron scanning and integrated into an existing morphological data set for Orussoidea. This fossil parasitoid wasp displays a unique character combination demonstrating intermediate conditions in evolving the complex features employed in echo ...
Lars Vilhelmsen   +4 more
wiley   +1 more source

Family Signiphoridae (Chalcidoidea) in Egypt [PDF]

open access: yes, 2016
Species of the family Signiphoridae (Chalcidoidea) are primarily hyperparasitoids associated with scale insects, whiteflies and mealybugs through other Chalcidoidea; however, certain species are primary parasitoids of these hosts.
Abd-Rabou, S., Evans, G. A.
core   +1 more source

Ecological Niche Adaptations Influence Transposable Element Dynamics in Pollinating and Non‐Pollinating Fig Wasps

open access: yesEcology and Evolution, Volume 15, Issue 6, June 2025.
The influence of ecological niches on transposable element (TE) dynamics, particularly in mutualistic relationships, remains understudied. This research reveals that non‐pollinating fig wasps (NPFWs) have “aggressive,” expansion‐driven TE landscapes with active insertions, contrasting with the stable, “dormant” TE profiles in pollinators.
Jing Liu   +4 more
wiley   +1 more source

First record of a non-pollinating fig wasp (Hymenoptera: Sycophaginae) from Dominican amber, with estimation of the size of its host figs [PDF]

open access: yes, 2016
Fig trees and their pollinating fig wasps arose about 75 million years ago in the Cretaceous period. Several other groups of chalcid wasps also utilize figs for larval development, including sycophagines, the putative sister group to pollinating fig ...
Azar, D   +4 more
core   +4 more sources

Pest categorisation of Eulecanium excrescens

open access: yesEFSA Journal, Volume 23, Issue 6, June 2025.
Abstract Following the commodity risk assessments of Acer spp., Malus spp. and Prunus spp. plants for planting from the United Kingdom (UK), in which Eulecanium excrescens (Ferris) (Hemiptera: Coccidae) was identified as a pest of possible concern, the European Commission requested the EFSA Panel on Plant Health to conduct a pest categorisation of E ...
EFSA Panel on Plant Health (PLH)   +26 more
wiley   +1 more source

The usefulness of chromosomes of parasitic wasps of the subfamily Eupelminae (Hymenoptera: Chalcidoidea: Eupelmidae) for subfamily systematics

open access: yesEuropean Journal of Entomology, 2008
Karyotypes of 16 Eupelminae species were analyzed. The haploid chromosome number was found to be much more diverse than the n = 5 previously recorded for three studied species.
Lucian FUSU
doaj   +1 more source

Species delimitation and molecular dating of southern African Tetramesa (Hymenoptera: Eurytomidae): An understudied microhymenopteran group

open access: yesAustral Entomology, Volume 64, Issue 2, May 2025.
Abstract The genus Tetramesa Walker (Hymenoptera: Eurytomidae) comprises over 200 species of herbivorous wasps that feed exclusively on grasses. Recent field surveys in South Africa for grass biological control programs have uncovered a large diversity of potential Tetramesa on African grasses.
Clarke J. M. van Steenderen   +4 more
wiley   +1 more source

Review of the genus Notanisus Walker, 1837 (Hymenoptera: Pteromalidae) in Iran [PDF]

open access: yesJournal of Insect Biodiversity and Systematics, 2019
The species of Notanisus Walker (Hymenoptera: Pteromalidae: Cleonyminae) from Iran were revised. Four Palaearctic species are recognized: N. clavatus Bouček, N. oulmesiensis (Delucchi), N. vanharteni Gibson and N. versicolor Walker; including one species
Hossein Lotfalizadeh   +2 more
doaj  

Poor control of the horse chestnut leafminer, Cameraria ohridella (Lepidoptera: Gracillariidae), by native European parasitoids: a synchronisation problem

open access: yesEuropean Journal of Entomology, 2004
Horse chestnut trees in many regions of Europe have suffered from epidemic infestations of C. ohridella for more than ten years. There has been no obvious decrease in the infestation level anywhere on the continent. One reason is, that the native natural
Giselher GRABENWEGER
doaj   +1 more source

Development and Sex Ratio of \u3ci\u3eMelittobia Australica\u3c/i\u3e and \u3ci\u3eM. Digitata\u3c/i\u3e (Hymenoptera: Eulophidae) on \u3ci\u3eMegachile Rotundata\u3c/i\u3e (Hymenoptera: Megachilidae) and \u3ci\u3eTrypoxylon Politum\u3c/i\u3e (Hymenoptera: Sphecidae) [PDF]

open access: yes, 2018
Life history, development time, and sex ratio of Melittobia australica Girault and M. digitata Dahms on Megachile rotundata (Fabricius) and Trypoxylon politum Say are presented and compared with previous reports.
Gonzalez, Jorge M, Matthews, Robert W
core   +2 more sources

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